Removing existing filter media and supplying and filling new filter media in 2 Nos of Pressure Sand Filter 1500 mm dia 1500 mm height each and 2 Nos of Activated Carbon Filter 1500 mm dia 1500 mm height each at NITPY Campus Karaikal

Removing existing filter media (sand, gravel, activated carbon) from 2 Nos. of PSF & 2 Nos. of ACF each of 1500mm diameter and 1500mm height including manual handling, stacking, Conveyance and disposal of removed media up to 5 km lead all done as per the direction of Engineer-In-Charge.

Pressure Sand Filter: 1500 dia x 1500 height (For 2 Nos.)

Supplying & filling support pebbles layer (20–40 mm) having bulk density ~ 1600 Kg/m3 as bottom support for a thickness of 150mm.

Supplying & filling medium gravel (12–20 mm) having bulk density ~ 1600 Kg/m3 as an intermediate layer for a thickness of 150mm.

Supplying & filling Coarse silex (6–12 mm) layer having bulk density ~ 1600 Kg/m3 for a thickness of 200mm.

Supplying & filling fine silex (1–2 mm) layer having bulk density ~ 1500 Kg/m3 for a thickness of 200mm.

Supplying & filling filter sand (0.6–1.2 mm) having bulk density ~ 1500 Kg/m3 as top layer for a thickness of 500mm.

Activated Carbon Filter: 1500 dia x 1500 height (For 2 Nos.)

Supplying & filling Coconut Shell carbon filter of Iodine Value>600 having density 550 Kg/m3 for Top layer with thickness 300mm.

Supplying & filling Coconut Shell carbon filter of Iodine Value>900 having density 500 Kg/m3 for Top layer with thickness 400mm.

Supplying & filling support pebbles layer (20–40 mm) having bulk density ~ 1600 Kg/m3 as bottom support for a thickness of 150mm

Supplying & filling medium gravel (12–20 mm) having bulk density ~ 1600 Kg/m3 as an intermediate layer for a thickness of 150mm

Supplying & filling Coarse silex (6–12 mm) layer having bulk density ~ 1600 Kg/m3 for a thickness of 200mm

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